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6 January, 07:29

Solve x^2+12x=-11by completing the square which is the solution set of the equation A={-11,-1} B={-11,1} C={11,-1} D={11,1}

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Answers (2)
  1. 6 January, 07:37
    0
    -11 and - 1

    Step-by-step explanation:

    x² + 12x = - 11

    x² + 12x + 36 = - 11 + 36

    (x+6) ² = 25

    x + 6 = √25

    x + 6 = 5

    x = 5 - 6

    x = - 1

    x+6 = - 5

    x = - 11
  2. 6 January, 07:52
    0
    Answer:B
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